I work for Microsoft and I quite like OpenShift (although we have AKS as the default, "vanilla" managed k8s service, you can also run OpenShift on Azure).

Sure it's opinionated, but at this point, which flavor of k8s isn't? Even k3s (which I play around with on https://github.com/rcarmo/azure-k3s-cluster) has its quirks.

Everyone who's targeting the enterprise market has a "value-added" brew of k8s at this point, so kudos to RH for the engineering effort :)